New stacks change the skyline at Dounreay

New stacks change the skyline at Dounreay

Dounreay’s skyline changed once again on Friday 13 March when the twin stacks of the new FCA ventilation system rose into the sky.

The two, 30-metre high chimneys are the latest phase of a £7.4 million contract to modernise the ventilation system serving the site’s former chemical works.

The stacks will vent airflows during decommissioning of some of the most hazardous facilities at the site.

“This area of the site is very congested with buildings close together, so just getting the stacks into the right position to be lifted into place has been like threading the eye of a needle,” explained project manager Iain Lyall.

Each stack is 30 metres high and 2-3 metres wide. They were craned into position by local company Simpsons.

Once commissioned, they will replace the 55m high concrete chimney that dates from the 1950s.